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用LS-DYNA软件模拟了中心点起爆、平面起爆和环形起爆方式下所形成的爆轰波波阵面、压力场及杆式弹丸的外形和速度分布。结果表明,平面起爆和环形起爆方式下形成的爆轰波对药型罩的压垮角小而压垮速度大,最终所形成的高速杆式弹丸速度和长径比都优于中心点起爆。采用实验方法研究了中心点起爆、环形起爆和三点同时起爆以及不同起爆半径对高速杆式弹丸的速度和穿甲能力的影响。实验结果表明,环形起爆和三点起爆后的弹丸速度和穿甲深度明显优于中心点起爆,大环起爆优于小环起爆,但对弹丸形状和穿孔孔径影响不明显。
The shape and velocity distribution of the detonation wave front, the pressure field and the rod projectile formed by the central point detonation, planar detonation and ring detonation are simulated by LS-DYNA software. The results show that the detonation wave formed by the planar detonation and toroidal detonation mode has a small collapse angle and a large crushing failure rate on the drug-coated shell, and the resultant high-speed rod projectile velocity and aspect ratio are better than the central detonation. Experimental methods were used to study the influence of central point detonation, annular detonation, three-point simultaneous detonation and different initiation radii on the velocity and penetration capacity of high-speed rod projectiles. The experimental results show that the projectile velocity and piercing depth after ring detonation and three detonation are obviously better than those from the center detonation, and the ring detonation is superior to ring detonation, but the shape and perforation aperture are not obvious.